Also, not OP, but I’m glad it’s written in AppKit vs SwiftUI purely; AppKit just feels better on the desktop. I can always “smell” a SwiftUI app just like I can an Electron app.
Never thought of that. Is that why the Settings app is so slow? If I click on one of the menu items on the left, it takes half a second or more to load the screen.
SwiftUI doesn't help, but each panel is a separate process. The previous version of System Preferences hid the delay by showing an animation, the new one doesn't.